COSTA MESA An OC Fair employee has a confirmed case of the H1N1 virus, more commonly known as swine flu, fair officials said today.

The employee, who worked part-time in the parking department, last worked at the fair July 19 and was not sick at the time, said Robin Wachner, OC Fair spokeswoman.

The man worked only on weekends and called in sick a few days after he had last worked at the fair. His duties in the parking department did not put him in frequent contact with the fair visitors, Wachner said.

The risk of transmission would be low in that situation, said Deanne Thompson, spokeswoman for the Orange County Health Care Agency.

Fair employees were notified by email Saturday and notices were posted in staff areas.

“We gave [employees]guidelines put forth by the CDC,” Wachner said. “We wanted to make sure we were open and transparent about this.”